Who we are
About Lexus V8 Engines
Lexus V8 Engines LLC builds OEM-based standalone wiring and ECU solutions for Toyota and Lexus V8 engine swaps. The focus is practical workshop reliability: clean harness work, clear support, and systems that are tested before they leave.
Built around real swaps
OEM-based approach
We adapt factory Toyota and Lexus ECU control for standalone engine swap use, keeping the system familiar, serviceable, and reliable.
Bench-tested systems
Harnesses are tested before shipping so wiring faults are caught in the shop, not after installation.
Support before and after
We help customers choose the right harness, ECU path, and project details before the work starts.
From Lextreme to Lexus V8 Engines
Lexus V8 Engines LLC is the evolution of Lextreme Engine Management Systems. The work has grown from specialist Toyota and Lexus V8 wiring support into a focused service for standalone harnesses, ECU programming, and swap support.
Every page on this site is being shaped around one goal: making the complex wiring and ECU side of a V8 swap easier to understand and easier to order.
Tell us about your swap
Send the engine, ECU, transmission, vehicle, and intended use. We will help identify the wiring and ECU path that fits.